/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.ignite.sql;

/**
 * Ignite SQL query facade.
 */
public interface IgniteSql {
    /**
     * Creates an SQL session that provides methods for executing SQL queries and holds query execution settings.
     *
     * @return A new session.
     */
    Session createSession();

    /**
     * Creates an SQL session builder.
     *
     * @return A new session builder.
     */
    Session.SessionBuilder sessionBuilder();

    /**
     * Creates an SQL statement from a given query string.
     *
     * @param query SQL query string.
     * @return A new statement.
     */
    Statement createStatement(String query);

    /**
     * Creates an SQL statement builder, which provides query-specific settings. 
     * These settings override the session defaults when the statement is executed.
     *
     * @return A new statement builder.
     */
    Statement.StatementBuilder statementBuilder();
}
